<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="banner.css">
</head>
<body>
<div class="m-nav">
    <div class="m-nav-inner">
        <div class="item active"><img src="img/1.jpg" alt="图片一"></div>
        <div class="item"><img src="img/2.jpg" alt="图片二"></div>
        <div class="item"><img src="img/3.jpg" alt="图片三"></div>
    </div>
    <ul class="u-indicator">
        <li class="active"></li>
        <li></li>
        <li></li>
    </ul>
</div>
</body>
</html>